I tuned the carby yesterday, which involves the normal idle adjustment screw, plus an additional adjustment which is set at running speed, 1800RPM (Boy did that make some racket in the Chev Shed)
The only real scare I had had during the whole process was straight after I tuned the carby and went for a test drive. The Red Chev was back firing badly every time I backed off or slowed down. Thinking I had stuffed up the tuning or something worse, I was relieved to find it was no more than the carby return spring not fully returning the throttle linkage to the idle position. However it took me several hours over 2 nights to get the combination of correct spring tension and accelerator pedal feel.
So far testing has indicated more power and better acceleration in 1st and 2nd gear, and in top gear seems quicker to reach 35 to 40 mph.
Fuel economy and hill performance are still to be determined, but as a general statement I believe the Red Chev will be a more pleasant car at highway cruising speeds.
The final few photos are as follows:
I was able to use the original crankcase ventilation tube with a bit of bending stretching etc.
The carby return spring, mounting bracket and one of the rose joints that remove any metal to metal contact in the carby linkages.
You can probably see from these photos that both the carby and choke linkages can be on either side, and you can see 2 of the 3 fuel inlet ports. All in all a very flexible carby for many applications.
The extra linkage installed between the accelerator pedal and the engine block.
The welded, and polished fitting with the retaining screw into the carby body
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